Electric connector

Abstract

The invention discloses an electric connector which comprises a main shell, the main shell defines an internal space extending in the first direction, a terminal channel and an auxiliary component are arranged in the main shell, the auxiliary component comprises a terminal locking piece and an end cover piece, the terminal locking piece is contained in the main shell, and the end cover piece is contained in the main shell; the end cover part is used for being inserted into the rear end of the main shell, and the end cover part and the main shell can be pre-assembled together in a first position relation with a gap and can be completely combined in a second position relation without the gap.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202410113450.5 and the title "A Connector", filed on January 25, 2024, the entire content of which is incorporated herein by reference. Technical Field

[0002] This application relates to electrical connectors, including but not limited to electrical connectors in the field of coaxial connectors. Background Art

[0003] When designing existing micro waterproof coaxial connectors, a loose part design is generally adopted, that is, after each part is designed, it is packaged separately and sold. Operators at the downstream client side still need to assemble the loose parts into components after receiving these loose parts, and then they can put the cable (including terminals) to be locked into the connector for fixation. The assembly of loose parts increases the operation time additionally. Summary of the Invention

[0004] The purpose of this application is to provide an electrical connector whose components have a pre-assembled design, thereby reducing the operation time required for client operators to assemble loose parts.

[0005] According to one aspect of this application, an electrical connector is provided, including a main housing, the main housing defining an internal space extending along a first direction, a terminal channel provided in the main housing, an auxiliary component, the auxiliary component including a terminal locking member and an end cover member, the terminal locking member being received in the main housing, the end cover member being adapted to be plugged into the rear end of the main housing, wherein the end cover member and the main housing can be pre-assembled together in a first positional relationship with a gap and can be completely combined in a second positional relationship without a gap.

[0006] Advantageous Effects: Compared with the prior art, this application provides an electrical connector, whose main housing and auxiliary component can be pre-assembled into one body and delivered to the downstream in a pre-assembled state for direct use in subsequent terminal loading operations. Description of the Drawings

[0007] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0008] Figure 1 A perspective view of the delivery state of the electrical connector provided by the embodiment of this application (the rear end cover is limited to the first fixing portion).

[0009] Figure 2Stereogram of the usage state of the electrical connector provided by the embodiment of the present application (the rear end cover is limited to the second fixing part).

[0010] Figure 3 Exploded stereogram of the main housing and the auxiliary member in the electrical connector provided by the embodiment of the present application.

[0011] Figure 4A For Figure 3 Exploded stereogram of the auxiliary member in.

[0012] Figure 4B For Figure 4A Exploded stereogram of the auxiliary member shown from another perspective.

[0013] Figure 5 Cross-sectional view of the electrical connector provided by the embodiment of the present application.

[0014] Figure 6 Stereogram of the main housing in the electrical connector provided by the embodiment of the present application.

[0015] Figure 7 Cross-sectional view of the main housing in the electrical connector provided by the embodiment of the present application.

[0016] Figure 8 Stereogram of the terminal locking member in the electrical connector provided by the embodiment of the present application.

[0017] Figure 9 Stereogram of the end cover member in the electrical connector provided by the embodiment of the present application.

[0018] Figure 10 Stereogram of the seal in the electrical connector provided by the embodiment of the present application.

[0019] Figure 11A Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0020] Figure 11B Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0021] Figure 11C Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0022] Figure 11D Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0023] Figure 11E Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0024] Figure 11F Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0025] Figure 11G Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0026] Figure 11H Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application;

[0027] Figure 11I Schematic diagram of the assembly steps of the electrical connector provided by the embodiment of the present application. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0030] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "plurality" is two or more.

[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] The embodiment of the present application provides an electrical connector 10 (or "connector") for placing and positioning at the end of a cable 400, and the electrical connector 10 extends along the first direction X. Refer to Figure 3, the electrical connector 10 includes a main housing 200 that penetrates through from front to back, and several auxiliary components 100 including a terminal locking member 110, an end cover member 120, and a seal member 130. The main housing 200 penetrates through from front to back, defines an internal space extending along the first direction X, and is provided with a terminal channel for accommodating and positioning the terminal 450. The terminal locking member 110 and the seal member 130 are used to be loaded into the main housing 200 from the rear in sequence, and finally the end cover member 120 is installed at the rear end of the main housing 200 and is snapped onto the first fixing portions 210 on both sides of the main housing 200 to form Figure 1 the delivered state shown. At this time, the main housing 200 and each auxiliary component 100 form a pre-assembled relationship, in which the main housing 200 and the end cover member 120 are connected to each other but there is a gap, forming a first positional relationship.

[0033] Further in combination with Figure 4A and Figure 5 , the end cover member 120 is provided with a through hole 125, the seal member 130 is provided with a first through hole 132, the terminal locking member 110 is provided with a second through hole 114, and the first through hole 132 and the second through hole 114 communicate with each other to form a first through slot 101 for the terminal 450 and the cable 400 to enter and exit. In the main housing 200, a terminal channel 102 is provided to accommodate and position the terminal 450. The first through slot 101 and the terminal channel 102 communicate with each other, thereby forming a connection channel 300. Therefore, the terminal 450 and the cable 400 can be directly loaded into Figure 1 the electrical connector 10 in the delivered state shown.

[0034] As Figure 2 shown, the snap-fit position of the end cover member 120 and the main housing 200 can be adjusted from the first fixing portion 210 to the second fixing portion 220. At this time, Figure 1 the electrical connector 10 in the delivered state shown is switched to Figure 2 the electrical connector 10 in the use state shown. At this time, the main housing 200 and each auxiliary component 100 form a final locking relationship (which can also be called an assembled relationship, a fully combined relationship), in which the main housing 200 and the end cover member 120 are connected to each other and there is basically no gap in the second positional relationship.

[0035] Referring to Figure 6 , in some embodiments, the main housing 200 includes a housing 230, and the housing 230 has a chamber 231 and an opening 232. The main housing 200 further includes a second through-slot structure 201 connected to the housing 230. The second through-slot structure 201 is located in the chamber 231, and the chamber 231 communicates with the opening 232. The terminal 450 and the cable 400 connected thereto can enter the chamber 231 from behind the main housing 200 through the opening 232, and pass through the chamber 231 and enter the second through-slot structure 201. The terminal 450 is finally positioned in the terminal channel by the acting force applied by the second through-slot structure 201.

[0036] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 In some embodiments, a part of the end cap member 120 is inserted into the chamber 231 through the rear end opening 232 of the main housing 200. At the same time, the locking arms on both sides of the end cap member 120 are connected to the locking protrusion structures on the outer side of the housing 230, so as to realize the plug-in connection between the end cap member 120 and the main housing 200.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 9 In some embodiments, both the first fixing portion 210 and the second fixing portion 220 are located on the outer wall of the housing 230. When the end cap member 120 is connected to the main housing 200, the end cap member 120 can be first limited to the first fixing portion 210. At this time, the main housing 200 of the electrical connector 10 and each auxiliary member 100 have been pre-assembled together, and are available for the terminals 450 and the cable 400 to pass through. Therefore, after the operator of the downstream client obtains the electrical connector 10 in the delivered state, the cable 400 to be fixed can be directly inserted into the electrical connector 10, eliminating the process of assembling the loose parts at the downstream client.

[0038] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 9 In some embodiments, after the terminals 450 and the cable 400 to be locked and fixed are placed into the electrical connector 10 in the delivered state, the relative positions of the end cap member 120 and the main housing 200 are adjusted so that the end cap member 120 is limited to the second fixing portion 220 which is farther away from the rear end of the main housing 200 than the first fixing portion 210. In this state, the end cap member 120 will push the terminal locking member 110 to move forward, so that the terminal locking member 110 applies a greater holding force to the terminals 450 in the main housing 200, thereby realizing the locking and fixing function of the terminals 450.

[0039] Please refer to Figure 5 、 Figure 6 and Figure 7, in some embodiments, the main housing 200 further includes an inner positioning portion 240. The inner positioning portion 240 is connected to the housing 230 and is located within the chamber 231. The inner positioning portion 240 is used to connect to the terminal locking member 110 in different positional relationships. When the end cover member 120 is limited to the first fixing portion 210, the inner positioning portion 240 is snapped into the first card interface 1121 on the card connecting arm 112 of the terminal locking member 110 to obtain a first relative position state; when the end cover member 120 is limited to the second fixing portion 220, the inner positioning portion 240 is snapped into the second card interface 1122 on the card connecting arm 112 of the terminal locking member 110, a second relative position state.

[0040] Please refer to Figure 3 , Figure 4A , Figure 4B , Figure 5 , Figure 6 , Figure 7 and Figure 8 , in some embodiments, the terminal locking member 110 includes a substrate 111 and a card connecting arm 112. Along the first direction X, the card connecting arm 112 is located on the side of the substrate 111 away from the end cover member 120, so that when the substrate 111 moves along the first direction X under the pushing of the end cover member 120, it drives the card connecting arm 112 to switch from the first relative position state to the second position state.

[0041] Please refer to Figures 1 to 8 , in some embodiments, along the first direction X, one end of the card connecting arm 112 is connected to the substrate 111; the card connecting arm 112 has a first card interface 1121 and a second card interface 1122, and the inner positioning portion 240 is limited to the first card interface 1121 or the second card interface 1122; when the end cover member 120 is limited to the second fixing portion 220, the inner positioning portion 240 and the terminal locking member 110 are in a second relative position state, and the inner positioning portion 240 is limited to the first card interface 1121; when the end cover member 120 is limited to the first fixing portion 210, the inner positioning portion 240 and the terminal locking member 110 are in a first relative position state, and the inner positioning portion 240 is limited to the second card interface 1122.

[0042] Please refer to Figure 3 , Figure 4A , Figure 4B , Figure 5 , Figure 6 and Figure 9In some embodiments, the end cover 120 includes a push block 122 and an end cover clamping arm 123. The push block 122 is used to be inserted into the opening 232, and at least a portion of the push block 122 is used to push into the chamber 231. The push block 122 is configured to push the terminal locking member 110 and the optional sealing member 130 along the first direction X, so that the terminal locking member 110 switches from the first relative position state to the second relative position state. The end cover clamping arm 123 is connected to the push block 122, and the end cover clamping arm 123 is located on a side of the push block 122 close to the main housing 200. The end cover clamping arm 123 is configured to be limited to the first fixing portion 210 or the second fixing portion 220. When the terminal locking member 110 is in the first relative position state, the end cover clamping arm 123 is limited to the first fixing portion 210, and when the terminal locking member 110 is in the second relative position state, the end cover clamping arm 123 is limited to the second fixing portion 220. Please refer to Figure 4A , Figure 4B and Figure 9 In some embodiments, the end cover 120 further includes a cover plate 121, which is connected to the push block 122, and is located on a side of the push block 122 away from the terminal locking member 110; along the first direction X, the orthographic projection of the cover plate 121 covers the opening 232 to seal the opening 232.

[0043] See also Figure 1 , Figure 2 , Figure 3 , Figure 4A , Figure 4B and Figure 9 In some embodiments, the end cover clamping arm 123 may have a simply supported beam structure, and the simply supported beam structure includes a pair of clamping rods 1231 and a connecting rod 1232 connected to the clamping rods 1231 .

[0044] See also Figure 3 , Figure 4A , Figure 4B , Figure 5 and Figure 10 In some embodiments, the seal 130 is sealed and connected to the housing 230 and is located in the chamber 231 ; specifically, along the first direction X, one end of the seal 130 abuts against the substrate 111 , and the other end of the seal 130 is configured to abut against the push block 122 .

[0045] See also Figure 3 , Figure 4A , Figure 4B , Figure 5 and Figure 10, in some embodiments, the seal 130 has a positioning groove 131, and the opening 232 of the positioning groove 131 faces the end cover member 120; the end cover member 120 further includes a positioning table 124, the positioning table 124 is connected to the push block 122, and the positioning table 124 is located on the side of the push block 122 close to the seal 130; when the end cover member 120 is limited by the first fixing portion 210, at least a part of the positioning table 124 is inserted into the positioning groove 131, and when the end cover member 120 is limited by the second fixing portion 220, the positioning table 124 is inserted into the positioning groove 131.

[0046] Please refer to Figures 3 to 8 , in some embodiments, the terminal locking member 110 further includes two first locking plates 113, the main housing 200 further includes two second locking plates 250, and the first locking plates 113 are configured to press the second locking plates 250 to apply a holding force to the terminal 450.

[0047] Please refer to Figures 3 to 8 , in some embodiments, the first locking plate 113 extends along the first direction X, and one end of the first locking plate 113 is connected to the substrate 111; the two first locking plates 113 are symmetrically arranged along the second direction Y, and the second direction Y is orthogonal to the first direction X; along the second direction Y, the two second locking plates 250 are respectively located on both sides of the first through groove 101.

[0048] Please refer to Figures 5 to 7 , in some embodiments, the second locking plate 250 extends along the first direction X, and one end of the second locking plate 250 is connected to the second through groove structure 201; the two second locking plates 250 are symmetrically arranged along the second direction Y; along the second direction Y, the two second locking plates 250 are respectively located on both sides of the second through groove structure 201.

[0049] Please refer to Figures 5 to 7 , in some embodiments, along the second direction Y, the second locking plate 250 is located on the side of the first locking plate 113 close to the second through groove structure 201; when the end cover member 120 is limited to the second fixing portion 220, the first locking plate 113 contacts the second locking plate 250 to limit the position of the second locking plate 250 in the second direction Y.

[0050] Please refer to Figure 6 , in some embodiments, at the end of the second locking plate 250, a convex structure is provided to provide a better holding effect for the terminal 450.

[0051] Please refer to Figure 6, in some embodiments, along the first direction X, the orthographic projection of the third convex portion 260 at least partially coincides with the slot hole of the second through-slot structure 201, such that the third convex portion 260 is inserted into the connection channel 300. By the first locking plate 113 adding a pressing force to the second locking plate 250, the second locking plate 250 transmits the pressing force to the third convex portion 260, and the terminal 450 is pressed and fixed in the connection channel 300 through the third convex portion 260.

[0052] Please refer to Figure 6 , in some embodiments, two relief slots 202 extending along the first direction X are formed in the slot wall of the second through-slot structure 201. The relief slots 202 penetrate through the slot wall of the second through-slot structure 201, and along the second direction Y, the two relief slots 202 are symmetrically arranged.

[0053] Please refer to Figure 6 , in some embodiments, the two second locking plates 250 are respectively located in the two relief slots 202. Along the first direction X, one end of the second locking plate 250 is connected to the second through-slot structure 201, and the other end of the second locking plate 250 is connected to the third convex portion 260.

[0054] Figures 11A - 11I is a schematic diagram of the assembly steps of the electrical connector 10. Through Figures 11A - 11F the steps shown, the electrical connector 10 in the delivered state can be assembled. In Figures 11G - 11H the steps shown, the terminal 450 and the cable 400 are loaded into the connector 10 in the delivered state. In Figure 11I the steps shown, the end cover member 120 and the main housing 200 are further locked, and at this time, the terminal locking member 110 is also pushed forward to apply a stronger terminal holding force, thereby obtaining the electrical connector 10 in the use state.

[0055] In the embodiments of the present application, the electrical connector 10 with a single terminal position is taken as an example to describe the present invention. It can be understood that the present application is not limited to the electrical connector 10 with a single terminal position, but can be extended to an electrical connector 10 with multiple terminal positions. Correspondingly, the number of through holes in the end cover member 120 and the seal member 130 can be increased, and further, the number of through holes in the terminal locking member 110 can be increased.

[0056] In the embodiments of the present application, the electrical connector 10 including the seal member 130 is described. It can be understood that the seal member 130 is used to meet the waterproof requirements in specific applications. Therefore, in some implementation manners, the seal member is not required.

[0057] Example implementation

[0058] Solution 1. An electrical connector 10, comprising: a main housing 200, the main housing 200 defining an internal space extending along a first direction X, a terminal channel being provided in the main housing 200, an auxiliary member 100, the auxiliary member 100 including a terminal locking member 110 and an end cap member 120, the terminal locking member 110 being received in the main housing 200, the end cap member 120 being adapted to be plugged into the rear end of the main housing 200, wherein the end cap member 120 and the main housing 200 can be pre-assembled together in a first positional relationship with a gap therebetween and can be fully engaged in a second positional relationship without a gap.

[0059] Alternative Solution 2. The electrical connector 10 as in Solution 1, the end cap member 120 includes a snap-fit structure. In the first relative position, the snap-fit structure is snapped onto a first fixing portion 210 on the main housing 200. In the second relative position, the snap-fit structure is snapped onto a second fixing portion 220 on the main housing 200, and the first fixing portion 210 is closer to the rear end of the main housing 200 than the second fixing portion 220.

[0060] Alternative Solution 3. The electrical connector 10 as in Solution 1 or 2, when the end cap member 120 and the main housing 200 are in the first positional relationship, the electrical connector 10 is in a delivery state. When the end cap member 120 and the main housing 200 are in the second positional relationship, the electrical connector 10 is in a final locked state.

[0061] Alternative Solution 4. The electrical connector 10 as in Solution 1, when the end cap member 120 and the main housing 200 are fully engaged, the end cap member 120 directly or indirectly pushes the terminal locking member 110 towards the front end of the electrical connector 10, thereby applying an enhanced terminal holding force to the terminals 450 in the terminal channel.

[0062] Alternative Solution 5. The electrical connector 10 as in Solution 2, the main housing 200 includes a housing 230, the housing 230 having a chamber 231 and an opening 232 facing the rear end of the electrical connector 10, the chamber 231 and the opening 232 being in communication, the terminal locking member 110 being disposed in the chamber 231, the end cap member 120 at least partially entering the opening 232, and the first fixing portion 210 and the second fixing portion 220 being located on the outer wall of the housing 230.

[0063] Alternative Solution 6. The electrical connector 10 as in Solution 2, the end cap member 120 includes: a push block 122, the push block 122 being plugged into the opening 232, at least a part of the push block 122 being located in the chamber 231; the push block 122 being configured to push the terminal locking member 110 along the first direction X; an end cap snap-fit arm 123, the end cap snap-fit arm 123 being connected to the push block 122, the end cap snap-fit arm 123 being located on the side of the push block 122 close to the main housing 200; the end cap snap-fit arm 123 being configured to be limited to the first fixing portion 210 or the second fixing portion 220.

[0064] Alternative 7. For the electrical connector 10 as in Alternative 6, the end - cap clamping arm 123 is a simply - supported beam structure.

[0065] Alternative 8. For the electrical connector 10 as in Alternative 5, the main housing 200 further includes an inner positioning portion 240. The inner positioning portion 240 is connected to the housing 230 and is located in the chamber 231.

[0066] The terminal locking member 110 includes: a substrate 111 configured to abut against the end - cap member 120 along the first direction X; a clamping arm 112. Along the first direction X, one end of the clamping arm 112 is connected to the substrate 111. The clamping arm 112 has a first clamping interface 1121 and a second clamping interface 1122. The inner positioning portion 240 is configured to be limited in the first clamping interface 1121 or the second clamping interface 1122.

[0067] Alternative 9. For the electrical connector 10 as in Alternative 8, when the end - cap member 120 is limited in the second fixing portion 220, the inner positioning portion 240 is limited in the first clamping interface 1121. When the end - cap member 120 is limited in the first fixing portion 210, the inner positioning portion 240 is limited in the second clamping interface 1122. The second clamping interface 1122 is farther from the substrate 111 than the first clamping interface 1121.

[0068] Alternative 10. For the electrical connector 10 as in Alternative 5, the auxiliary member 100 further includes a seal 130. The seal 130 is sealingly connected to the housing 230 and is located in the chamber 231. The seal 130 is located between the terminal locking member 110 and the end - cap member 120.

[0069] Alternative 11. For the electrical connector 10 as in Alternative 10, the seal 130 has a positioning groove 131. The opening 232 of the positioning groove 131 faces the end - cap member 120. The end - cap member 120 further includes a positioning table 124. The positioning table 124 is connected to the push block 122 and is disposed in the positioning groove 131.

[0070] Alternative 12. For the electrical connector 10 as in Alternative 1, the terminal locking member 110 further includes:

[0071] Two first locking plates 113. The first locking plates 113 extend along the first direction X. One end of the first locking plates 113 is connected to the substrate 111. The two first locking plates 113 are symmetrically disposed along the second direction Y, and the second direction Y is orthogonal to the first direction X.

[0072] The main housing 200 includes a second through-groove structure 201 connected to the housing 230, and also includes two second locking plates 250. The second locking plates 250 extend along the first direction X, and one end of each second locking plate 250 is connected to the second through-groove structure 201. The two second locking plates 250 are symmetrically arranged along the second direction Y. Along the second direction Y, the second locking plates 250 are located on the side of the first locking plate 113 closer to the second through-groove structure 201.

[0073] Wherein, when the end cover member 120 is limited to the second fixing portion 220, the first locking plate 113 contacts the second locking plate 250.

[0074] Alternative 13. The electrical connector 10 as in Alternative 1, the electrical connector 10 is a coaxial connector, and the number of terminal channels is one.

[0075] In this text, specific examples are used to elaborate on the principles and implementation manners of the present application. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An electrical connector, comprising: A main housing (200), the main housing (200) defining an internal space extending along a first direction (X), and a terminal channel is provided in the main housing (200); An auxiliary member (100), the auxiliary member (100) including a terminal locking member (110) and an end cover member (120), the terminal locking member (110) being received in the main housing (200), and the end cover member (120) being adapted to be plugged into the rear end of the main housing (200); Wherein, the end cover member (120) and the main housing (200) can be pre-assembled together in a first positional relationship with a gap therebetween, and can be fully combined in a second positional relationship without a gap.

2. The electrical connector according to claim 1, wherein The end cover member (120) includes a clamping structure. In a first relative position, the clamping structure is clamped to a first fixing portion (210) on the main housing (200). In a second relative position, the clamping structure is clamped to a second fixing portion (220) on the main housing (200), and the first fixing portion (210) is closer to the rear end of the main housing (200) than the second fixing portion (220).

3. The electrical connector according to claim 1 or 2, characterized in that, When the end cover member (120) and the main housing (200) are in the first positional relationship, the electrical connector (10) is in a delivery state. When the end cover member (120) and the main housing (200) are in the second positional relationship, the electrical connector (10) is in a final locked state.

4. The electrical connector according to claim 1, wherein When the end cover member (120) and the main housing (200) are fully combined, the end cover member (120) directly or indirectly pushes the terminal locking member (110) to move towards the front end of the electrical connector (10), thereby applying an enhanced terminal holding force to the terminals (450) in the terminal channel.

5. The electrical connector according to claim 2, characterized in that, The main housing (200) includes a housing (230), the housing (230) having a chamber (231) and an opening (232) facing the rear end of the electrical connector (10), the chamber (231) communicating with the opening (232), the terminal locking member (110) being disposed in the chamber (231), the end cover member (120) at least partially entering the opening (232), and the first fixing portion (210) and the second fixing portion (220) being located on the outer wall of the housing (230).

6. The electrical connector according to claim 5, wherein The end cover member (120) includes: A push block (122), the push block (122) being plugged into the opening (232), at least a part of the push block (122) being located in the chamber (231); the push block (122) being configured to push the terminal locking member (110) along the first direction (X); An end cover clamping arm (123), the end cover clamping arm (123) being connected to the push block (122), the end cover clamping arm (123) being located on the side of the push block (122) close to the main housing (200); the end cover clamping arm (123) being configured to be limited to the first fixing portion (210) or the second fixing portion (220).

7. The electrical connector according to claim 6, wherein The end cover clamping arm (123) is a simple supported beam structure.

8. The electrical connector according to claim 5, wherein the main housing (200) further includes an inner positioning portion (240), the inner positioning portion (240) is connected to the housing (230) and is located in the chamber (231); the terminal locking member (110) includes: a substrate (111), the substrate (111) is configured to abut against the end cover member (120) along the first direction (X); a clamping arm (112), along the first direction (X), one end of the clamping arm (112) is connected to the substrate (111), the clamping arm (112) has a first clamping interface (1121) and a second clamping interface (1122), and the inner positioning portion (240) is configured to be limited in the first clamping interface (1121) or the second clamping interface (1122).

9. The electrical connector according to claim 8, wherein, When the end cover member (120) is limited in the second fixing portion (220), the inner positioning portion (240) is limited in the first clamping interface (1121); when the end cover member (120) is limited in the first fixing portion (210), the inner positioning portion (240) is limited in the second clamping interface (1122), and the second clamping interface (1122) is farther from the substrate (111) than the first clamping interface (1121).

10. The electrical connector according to claim 6, wherein The auxiliary member (100) further includes a seal (130), the seal (130) is sealingly connected to the housing (230) and is located in the chamber (231); the seal (130) is located between the terminal locking member (110) and the end cover member (120).

11. The electrical connector according to claim 10, wherein The seal (130) has a positioning groove (131), and an opening (232) of the positioning groove (131) faces the end cover member (120); the end cover member (120) further includes a positioning table (124), the positioning table (124) is connected to the push block (122), and the positioning table (124) is disposed in the positioning groove (131).

12. The electrical connector according to claim 8, wherein, The terminal locking member (110) further includes: two first locking plates (113), the first locking plates (113) extend along the first direction (X), and one end of the first locking plates (113) is connected to the substrate (111); the two first locking plates (113) are symmetrically arranged along a second direction (Y), and the second direction (Y) is orthogonal to the first direction (X); the main housing (200) includes a second through groove structure (201) connected to the housing (230), and further includes two second locking plates (250), the second locking plates (250) extend along the first direction (X), and one end of the second locking plates (250) is connected to the second through groove structure (201); the two second locking plates (250) are symmetrically arranged along the second direction (Y); along the second direction (Y), the second locking plates (250) are located on a side of the first locking plates (113) close to the second through groove structure (201); Wherein, when the end cover member (120) is limited to the second fixing portion (220), the first locking plate (113) contacts the second locking plate (250).

13. The electrical connector according to claim 1, wherein, The electrical connector (10) is a coaxial connector, and the number of terminal channels is one.

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